MarketPress UK VAT on Shipping

Hi,

Here is a question regarding TAX (UK VAT) on shipping.

MarketPress (unless I am wrong) has an on/off attitude to TAX on Shipping.

In the UK, if you sell items that are not VATable then you don't charge VAT on shipping.

If you sell items that are VATable then you do.

The problem comes when you have a shop with non VATable items and VATable items.

Is there a way to handle this?

I see there are plugins for wp-ecommerce that handle this mixed VAT shipping issue, but is there a way to make it work in MarketPress (no not the wp-ecommerce plugin, the logic)?

--edit--
fyi Woocomerce has this built in - 'Shipping tax class based on cart items'